In the video they say they will get the feel of a 85/1 with this adapter and a 85/1.4 on a Nex, and that is totally wrong.
You will get the image a 85/1.4 gives you on a full frame. With a f/1 setting for speed, that’s true, but definitely not a 85/1 image look depth-of-field wise.

Just like putting a 50/1.4 on a 1.5 crop sensor won’t make the photographs look like the ones taken by a full frame 75/1.4, but a 75/2 instead, regarding image looks and depth of field. And a 1.4 lense regarding speed, that’s true.

The aperture that gives you the “quantity of light arriving on sensor per surface units” (and so the speed/iso/aperture combination you need in a specific situation) is NOT the same as the aperture that gives you the depth of field you get on a specific setup, if you change sensor.

A x2 teleconverter does change both apertures, because you keep the same sensor. But here, you try to compare things with different sensors, and that’s why the two apertures aren’t linked any more.

]]>By: ChenAlanhttp://www.sonyalpharumors.com/adam-for-mythbusters-talks-about-speed-booster-and-nex-cameras/comment-page-1/#comment-191904
Fri, 08 Feb 2013 11:32:34 +0000http://www.sonyalpharumors.com/?p=16844#comment-191904For all his goofyness in Mythbusters, my respect for Adam Savage has just gone up insanely high.
]]>By: Klipsenhttp://www.sonyalpharumors.com/adam-for-mythbusters-talks-about-speed-booster-and-nex-cameras/comment-page-1/#comment-191564
Thu, 07 Feb 2013 15:11:35 +0000http://www.sonyalpharumors.com/?p=16844#comment-191564Yes, but for use on photo cameras, the technology was apparently patented by Kodak, who never manufactured the product, nor would allow anyone else to do so.

I’ve argued for Sony to start making them for years, because it would turn their APS-C cameras into full frame cameras, increase lens speed and potentially lens resolution.

]]>By: Alfhttp://www.sonyalpharumors.com/adam-for-mythbusters-talks-about-speed-booster-and-nex-cameras/comment-page-1/#comment-191387
Thu, 07 Feb 2013 10:27:33 +0000http://www.sonyalpharumors.com/?p=16844#comment-191387It gives the same DoF as on FF because you get the same aperture for almost the same focal lenght (x1.08 crop instead of x1.5 crop).
And that’s what defines DoF, not the size of the sensor per se.

Imagine a 100mm f/1 full frame lens.
On an APS-C NEX with speedbooster, this lens will become a 108mm f/1.08
Pretty close isn’t it ?

]]>By: Austinhttp://www.sonyalpharumors.com/adam-for-mythbusters-talks-about-speed-booster-and-nex-cameras/comment-page-1/#comment-191288
Thu, 07 Feb 2013 02:58:48 +0000http://www.sonyalpharumors.com/?p=16844#comment-191288The speed booster can’t get faster than 0.9 because of the size of the entrance pupil. So 1.2 lenses will be as fast as a 1 or a 0.95
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